graphrescheck: Check conditions on digraph

In causaloptim: An Interface to Specify Causal Graphs and Compute Bounds on Causal Effects

Check conditions on digraph

Description

Check that a given digraph satisfies the conditions of 'no left to right edges', 'no cycles', 'valid number of categories' and 'valid variable names'. Optionally returns the digraph if all checks are passed.

Usage

graphrescheck(graphres, ret = FALSE)

Arguments

graphres	An igraph object representing a digraph.
ret	A logical value. Default is FALSE. Set to TRUE to also return graphres if all checks are passed.

Value

If ret=FALSE (default): TRUE if all checks pass; else FALSE. If ret=TRUE: graphres if all checks pass; else FALSE.

Examples

graphres <- graph_from_literal(X -+ Y, X -+ M, M -+ Y, Ul -+ X, Ur -+ M, Ur -+ Y)
V(graphres)$leftside <- c(1, 0, 0, 1, 0)
V(graphres)$latent <- c(0, 0, 0, 1, 1)
V(graphres)$nvals <- c(2, 2, 2, 2, 2)
V(graphres)$exposure <- c(0, 0, 0, 0, 0)
V(graphres)$outcome <- c(0, 0, 0, 0, 0)
E(graphres)$rlconnect <- c(0, 0, 0, 0, 0, 0)
E(graphres)$edge.monotone <- c(0, 0, 0, 0, 0, 0)
graphrescheck(graphres = graphres) # TRUE

causaloptim documentation built on Nov. 2, 2023, 6:06 p.m.